Alabama 2X2 Commemorative Half Dollar 1921 MS 64 NGC SKUI18311 April 26, 2025admin Alabama 2X2 Commemorative Half Dollar 1921 MS 64 NGC SKU:I18311. A genuine 1921 Alabama Centennial, 2X2 Commemorative Silver Half Dollar Coin, graded and certified MS 64 by NGC. The images you see are for the exact item you will receive.